Item Dimensions LxWxH 40 x 80 x 100 Millimeters Item Weight 120 Grams Mounting Type Wall Mount, Tabletop Upper Temperature Rating 70 Degrees Celsius Temperature Range : -50°C ~ 70°C (-58°F ~ 158°CF) Temp. Accuracy : +0.5°C (0°C ~ 40°C) or +1% Humidity Range : 10% ~ 99% RH Humidity Accuracy : +3% RH (50% ~ 80%)or +5% Battery: AAA 1.5V.